MGM Resorts International
US ˙ NYSE ˙ US5529531015

SecurityMGM / MGM Resorts International
InstitutionWiley Bros.-aintree Capital, Llc
Latest Disclosed Ownership62,984 shares
Latest Disclosed Value $ 2,323,747
Wiley Bros.-aintree Capital, Llc reports 3.12% decrease in ownership of MGM / MGM Resorts International

On May 15, 2026 - Wiley Bros.-aintree Capital, Llc filed a 13F-HR form disclosing ownership of 62,984 shares of MGM Resorts International (US:MGM) valued at $2,331,038 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 65,011 shares of MGM Resorts International. This represents a change in shares of -3.12% during the quarter. The current value of the position is $3,042,127 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 62,984 -2,027 -3.12 2,324 -2.11 0.0115
2026-02-17 2025-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 65,011 8,690 15.43 2,374 21.88 0.0124
2025-11-14 2025-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 56,321 4,310 8.29 1,948 9.14 0.0125
2025-08-14 2025-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 52,011 20,784 66.56 1,785 88.19 0.0137
2025-05-15 2025-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 31,227 8,598 38.00 948 22.80 0.0101
2025-02-14 2024-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 22,629 2,581 12.87 773 -1.03 0.0093
2024-11-14 2024-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 20,048 -165 -0.82 781 -13.14 0.0151
2024-07-24 2024-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 20,213 11,972 145.27 898 130.85 0.0393
2024-04-11 2024-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 8,241 3,377 69.43 389 79.26 0.0536
2024-01-09 2023-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 4,864 4,864 217 0.0529
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.